"We need to get some broad based support, to capture the public's imagination... So we have to offer up scary scenarios, make simplified, dramatic statements and make little mention of any doubts... Each of us has to decide what the right balance is between being effective and being honest." - Stephen Schneider, Stanford Professor of Climatology, lead author of many IPCC reports

"Unless we announce disasters no one will listen." - Sir John Houghton, first chairman of IPCC

"It doesn't matter what is true, it only matters what people believe is true." - Paul Watson, co-founder of Greenpeace

"We've got to ride this global warming issue. Even if the theory of global warming is wrong, we will be doing the right thing in terms of economic and environmental policy." - Timothy Wirth, President of the UN Foundation

"No matter if the science of global warming is all phony... climate change provides the greatest opportunity to bring about justice and equality in the world." - Christine Stewart, fmr Canadian Minister of the Environment

"The only way to get our society to truly change is to frighten people with the possibility of a catastrophe." - emeritus professor Daniel Botkin

"We require a central organizing principle - one agreed to voluntarily. Minor shifts in policy, moderate improvement in laws and regulations, rhetoric offered in lieu of genuine change - these are all forms of appeasement, designed to satisfy the publicís desire to believe that sacrifice, struggle and a wrenching transformation of society will not be necessary." - Al Gore, Earth in the Balance

"Isn't the only hope for the planet that the industrialized civilizations collapse? Isn't it our responsiblity to bring that about?" - Maurice Strong, founder of the UN Environment Programme

"A massive campaign must be launched to de-develop the United States. De-development means bringing our economic system into line with the realities of ecology and the world resource situation." - Paul Ehrlich, Professor of Population Studies

"The only hope for the world is to make sure there is not another United States. We can't let other countries have the same number of cars, the amount of industrialization, we have in the US. We have to stop these Third World countries right where they are." - Michael Oppenheimer, Environmental Defense Fund

"Complex technology of any sort is an assault on human dignity. It would be little short of disastrous for us to discover a source of clean, cheap, abundant energy, because of what we might do with it." - Amory Lovins, Rocky Mountain Institute

"The prospect of cheap fusion energy is the worst thing that could happen to the planet." - Jeremy Rifkin, Greenhouse Crisis Foundation

"Giving society cheap, abundant energy would be the equivalent of giving an idiot child a machine gun." - Prof Paul Ehrlich, Stanford University

"The big threat to the planet is people: there are too many, doing too well economically and burning too much oil." Ė Sir James Lovelock, BBC Interview

"My three main goals would be to reduce human population to about 100 million worldwide, destroy the industrial infrastructure and see wilderness, with itís full complement of species, returning throughout the world." -Dave Foreman, co-founder of Earth First!

"A total population of 250-300 million people, a 95% decline from present levels, would be ideal." - Ted Turner, founder of CNN and major UN donor

"... the resultant ideal sustainable population is hence more than 500 million but less than one billion." - Club of Rome, Goals for Mankind

"If I were reincarnated I would wish to be returned to earth as a killer virus to lower human population levels." - Prince Philip, Duke of Edinburgh, patron of the World Wildlife Fund

"I suspect that eradicating small pox was wrong. It played an important part in balancing ecosystems." - John Davis, editor of Earth First! Journal

"The extinction of the human species may not only be inevitable but a good thing." - Christopher Manes, Earth First!

"Childbearing should be a punishable crime against society, unless the parents hold a government license. All potential parents should be required to use contraceptive chemicals, the government issuing antidotes to citizens chosen for childbearing." - David Brower, first Executive Director of the Sierra Club